Lens module and cutting machine

Abstract

The utility model discloses a lens module and a cutting machine, the cutting machine comprises the lens module, and the lens module comprises a lens, a connecting piece, an annular light source and an air supply assembly. The lens extends in the first direction, a first through hole is formed in the connecting piece, and the first end of the lens penetrates through the first through hole. The annular light source is connected with the connecting piece, a second through hole is formed in the annular light source and communicated with the first through hole, a first cavity is formed between the first through hole and the second through hole, and the first end of the lens is located in the first cavity. The air supply assembly is connected with the connecting piece, an air blowing channel is arranged between the air supply assembly and the connecting piece, the air blowing channel is communicated with the first cavity, and the center line, close to a port of the first cavity, of the air blowing channel is tangent to the peripheral side wall of the lens. The problem that in the prior art, a lens module cannot normally recognize a machined object is solved.

Description

Technical Field

[0001] This application relates to the field of ultra-precision machining technology, and more specifically, to a lens module and a cutting machine. Background Technology

[0002] Existing cutting machines include wafer dicing machines, which are generally equipped with lens modules. These lens modules are used for precise positioning of the workpiece and for quality inspection during the cutting process. During cutting, the processing area typically generates a significant amount of water mist and dust, which can easily contaminate the lens on the lens module. This can prevent the lens module from properly recognizing the workpiece, ultimately affecting the cutting accuracy. Utility Model Content

[0003] The main objective of this application is to provide a lens module and a cutting machine to at least solve the problem in the prior art that the lens module cannot properly identify the workpiece being processed.

[0004] According to one aspect of this application, a lens module is provided, comprising:

[0005] A lens, which extends along a first direction;

[0006] A connector having a first through hole, wherein the first end of the lens passes through the first through hole;

[0007] A ring light source is connected to the connector. The ring light source has a second through hole that communicates with the first through hole. A first chamber is formed between the first through hole and the second through hole, and the first end of the lens is located in the first chamber.

[0008] An air supply assembly is provided, which is connected to the connector. An air blowing channel is provided between the air supply assembly and the connector. The air blowing channel communicates with the first chamber, and the center line of the port of the air blowing channel near the first chamber is tangent to the outer peripheral sidewall of the lens.

[0009] Furthermore, the annular light source is provided with a first conical groove and a second conical groove. The first conical groove is provided on the side of the annular light source close to the connector, and the second conical groove is provided on the side of the annular light source away from the connector. The second through hole penetrates the bottom of the first conical groove and the bottom of the second conical groove.

[0010] Along the first direction, the cross-sectional area of ​​the first conical groove gradually increases, while the cross-sectional area of ​​the second conical groove gradually decreases.

[0011] Furthermore, the first end of the lens includes:

[0012] A transition section is provided on the side of the first end of the lens away from the annular light source. The transition section is sealed to the first through hole, and the cross-sectional area of ​​the transition section gradually increases along the first direction.

[0013] A straight section, which is connected to the transition section on the side near the annular light source.

[0014] Furthermore, the transition section is provided with an interconnected inclined conical surface and an annular surface, the inclined conical surface connecting the straight section and the annular surface, and the center line of the blowing channel near the port of the first chamber is tangent to the annular surface;

[0015] The lens module also includes a sealing ring, which is fitted around the outer periphery of the annular surface and abuts against the inner periphery of the first through hole.

[0016] Furthermore, the gas supply assembly includes a gas storage tank, a gas supply pipeline assembly, and a guide block. The gas supply pipeline assembly is disposed between the gas storage tank and the guide block. The guide block is connected to the connector. The guide block has an air inlet channel and a third through hole. The air inlet channel communicates with the blowing channel. The third through hole penetrates the guide block along the first direction.

[0017] Furthermore, the connector includes an annular seat, the outer peripheral surface of the annular seat is a first arc-shaped surface, and the guide block is provided with a second arc-shaped surface on the side near the annular seat, the second arc-shaped surface abutting against the first arc-shaped surface.

[0018] Furthermore, the connector is provided with a first hole, which extends from the outer peripheral sidewall of the connector to the first through hole. The guide block is provided with a second hole opposite to the first hole, which together with the first hole form the air blowing channel. An air passage pipe passes through the air blowing channel.

[0019] Further, along the first direction, the projection surface of the second through hole is located within the projection surface of the first end of the lens, and the maximum distance L1 from the outer edge of the projection surface of the second through hole to the outer edge of the projection surface of the first end of the lens satisfies the relationship: 0mm < L1 ≤ 2mm; and / or,

[0020] The minimum inner diameter D3 of the second through hole and the minimum outer diameter D4 of the first end of the lens satisfy the following relationship: 0.86 ≤ D3 / D4 ≤ 0.90; and / or,

[0021] The inner diameter D1 of the air blowing channel and the minimum inner diameter D3 of the second through hole satisfy the following relationship: 0.2≤D1 / D3≤0.3.

[0022] Furthermore, the inner diameter D2 of the first through hole and the minimum outer diameter D4 of the first end of the lens satisfy the following relationship: 0.60 ≤ D4 / D2 ≤ 0.68; and / or,

[0023] The maximum distance L2 from the inner circumferential surface of the first chamber to the first end of the lens and the minimum outer diameter D4 of the first end of the lens satisfy the following relationship: 0.25≤L2 / D4≤0.30.

[0024] On the other hand, this application provides a cutting machine that includes the above-mentioned lens module.

[0025] Compared to existing technologies, in this application, the first end of the lens is used for appearance quality inspection and positioning of the processed workpiece. Since the first end of the lens is located within the first chamber, and an air-blowing channel is provided between the lens module connector and the air supply assembly, when the cutting machine starts, the air supply assembly also starts, causing airflow from the air supply assembly to the air-blowing channel, and after passing through the first chamber, it flows out through the second through-hole. Under the action of the airflow, water mist and dust are difficult to enter the first chamber, thus preventing water mist and dust from contaminating the lens and causing it to fail to properly identify the processed workpiece. Furthermore, in this application, the center line of the port of the air-blowing channel near the first chamber is tangent to the outer peripheral wall of the lens. This means that when the airflow enters the first chamber through the air-blowing channel, the airflow spirals down the first end of the lens and exits through the second through-hole, allowing the airflow to clean the entire outer peripheral wall of the first end of the lens, preventing water mist or dust from covering the outer peripheral wall of the lens. On the other hand, the airflow can also cool the lens, preventing the lens from overheating and causing thermal deformation after long-term operation. Attached Figure Description

[0026] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments and are used to explain this application, but do not constitute an undue limitation of this application. In the drawings:

[0027] Figure 1 This is a schematic diagram of the lens module disclosed in this application;

[0028] Figure 2 This is an exploded structural diagram of the lens module disclosed in this application;

[0029] Figure 3 This is a partial structural diagram of the lens module disclosed in this application (with the guide block and air passage removed);

[0030] Figure 4 This is a cross-sectional view of the lens module disclosed in this application from a first-person perspective.

[0031] Figure 5This is a cross-sectional schematic diagram of the lens module disclosed in this application from a second perspective;

[0032] Figure 6 This is a schematic diagram of the structure of the flow guide block disclosed in this application;

[0033] Figure 7 This is a simplified projection diagram of the first end of the lens and the second through hole of this application.

[0034] The above figures include the following reference numerals:

[0035] 10. Lens; 11. Transition section; 12. Straight section; 20. Connector; 30. Ring light source; 40. Air supply assembly; 41. Guide block; 50. Point light source; 60. Camera; 70. Air passage pipe; 80. Sealing ring; 111. Annular surface; 112. Inclined conical surface; 201. First through hole; 202. First chamber; 203. First hole; 204. First arc-shaped surface; 301. Second through hole; 302. First conical groove; 303. Second conical groove; 411. Second hole; 412. Third through hole; 413. Second arc-shaped surface. Detailed Implementation

[0036] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. This application will now be described in detail with reference to the accompanying drawings and embodiments.

[0037] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0038] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps described in these embodiments do not limit the scope of this application. It should also be understood that, for ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following drawings denote similar items; therefore, once an item is defined in one drawing, it need not be further discussed in subsequent drawings.

[0039] See Figures 1 to 7 As shown, according to an embodiment of this application, a cutting machine is provided, which includes a lens module, wherein the lens module includes a lens 10, a connector 20, a ring light source 30, and an air supply assembly 40.

[0040] Among them, lens 10 is along the first direction (as shown in the attached image). Figure 1 Extending in the Z-direction, the connector 20 has a first through hole 201, through which the first end of the lens 10 passes. A ring light source 30 is connected to the connector 20, and a second through hole 301 is provided on the ring light source 30. The second through hole 301 communicates with the first through hole 201, forming a first chamber 202 between the first and second through holes 201, with the first end of the lens 10 located within the first chamber 202. An air supply assembly 40 is connected to the connector 20, and an air blowing channel is provided between the air supply assembly 40 and the connector 20. The air blowing channel communicates with the first chamber 202, and the centerline of the port of the air blowing channel near the first chamber 202 is tangent to the outer peripheral sidewall of the lens 10.

[0041] As described in the background section, the cutting machine in this application includes a circular mirror cutting machine. When cutting a workpiece, the circular mirror cutting machine requires a lens module to position the workpiece and inspect its appearance quality, thereby improving the processing accuracy. Typically, during processing, a significant amount of water mist and dust is generated. When this water mist or dust covers the lens 10, it reduces the lens 10's ability to recognize the workpiece, thus decreasing the processing accuracy and ultimately reducing the quality of the finished workpiece. One existing solution is to install a sheet metal cover around the lens 10. The cover is opened when the lens 10 is needed and closed when it is not. However, this method cannot prevent water mist and dust generated during processing from entering and contaminating the lens 10. Furthermore, after prolonged use, gaps may form in the sheet metal cover, allowing water mist and dust to enter and contaminate the lens 10. On the other hand, sheet metal covers are usually controlled by cylinders, which causes a certain delay in the use of sheet metal covers, thereby reducing the working efficiency of the cutting machine.

[0042] In this embodiment, the first end of the lens 10 is used to inspect and position the appearance quality of the workpiece. Since the first end of the lens 10 is located in the first chamber 202, and an air blowing channel is provided between the lens module connector 20 and the air supply component 40, when the cutting machine is started, the air supply component 40 is also started, so that the airflow goes from the air supply component 40 to the air blowing channel, and flows out of the second through hole 301 after passing through the first chamber 202. Under the action of the airflow, water mist and dust are difficult to enter the first chamber 202, thereby avoiding water mist and dust contamination of the lens 10. Furthermore, in this embodiment, the centerline of the port of the air blowing channel near the first chamber 202 is tangent to the outer peripheral wall of the lens 10. This means that when the airflow enters the first chamber 202 through the air blowing channel, the airflow spirals down from the first end of the lens 10 and exits through the second through hole 301. This allows the airflow to clean the entire outer peripheral wall of the first end of the lens 10, preventing water mist or dust from covering the outer peripheral wall of the lens 10 and causing the lens 10 to fail to properly identify the workpiece. On the other hand, the airflow can also cool the lens 10, preventing the lens 10 from overheating and causing thermal deformation after long-term operation.

[0043] Furthermore, the annular light source 30 is provided with a first conical groove 302 and a second conical groove 303. The first conical groove 302 is provided on the side of the annular light source 30 close to the connector 20, and the second conical groove 303 is provided on the side of the annular light source 30 away from the connector 20. The second through hole 301 penetrates the bottom of the first conical groove 302 and the bottom of the second conical groove 303. Along the first direction, the cross-sectional area of ​​the first conical groove 302 gradually increases, and the cross-sectional area of ​​the second conical groove 303 gradually decreases.

[0044] It should be noted that the cross-sectional area of ​​the first conical groove 302 refers to the area of ​​the cross-section obtained by cutting the first conical groove 302 with a plane perpendicular to the first direction; similarly, the cross-sectional area of ​​the second conical groove 303 refers to the area of ​​the cross-section obtained by cutting the second conical groove 303 with a plane perpendicular to the first direction. In this embodiment, the light source of the ring light source 30 is installed in the second conical groove 303. Since the cross-sectional area of ​​the second conical groove 303 gradually decreases along the first direction, the range of light emitted by the light source in the second conical groove 303 is wider, so that the lens 10 can better inspect the workpiece. Furthermore, since the first conical groove 302 is located on the side of the ring light source 30 close to the connector 20, and the cross-sectional area of ​​the first conical groove 302 gradually increases along the first direction, when the airflow flows into the first conical groove 302 from the first chamber 202, the cross-sectional area of ​​the first conical groove 302 gradually decreases from the direction of the first chamber 202 to the second through hole 301, resulting in an increased airflow velocity, which in turn makes the airflow passing through the second through hole 301 have a larger flow velocity, thereby improving the lens module's ability to prevent water fogging and dust.

[0045] Furthermore, the first end of the lens 10 includes a transition section 11 and a straight section 12. The transition section 11 is disposed on the side of the first end of the lens 10 away from the ring light source 30. The transition section 11 is sealed and connected to the first through hole 201. Along the first direction, the cross-sectional area of ​​the transition section 11 gradually increases. The straight section 12 is connected to the side of the transition section 11 close to the ring light source 30.

[0046] Specifically, the cross-sectional area of ​​the transition section 11 refers to the area of ​​the cross section obtained by cutting the transition section 11 with a plane perpendicular to the first direction. In this embodiment, the cross-sectional area of ​​the transition section 11 gradually increases along the first direction; that is, the volume of the first chamber 202 corresponding to the transition section 11 gradually decreases along the first direction, thereby reducing the gas in the first chamber 202 corresponding to the transition section 11. In addition, in order to prevent the airflow from passing through the transition section 11 and the connector 20, the inner circumferential surface of the transition section 11 and the first through hole 201 are sealed in this embodiment; that is, in this embodiment, the airflow can only flow directionally through the air blowing channel, the first chamber 202, and the second through hole 301.

[0047] In addition, the transition section 11 is provided with an inclined conical surface 112 and an annular surface 111 that are connected to each other. The inclined conical surface 112 connects the straight section 12 and the annular surface 111. The center line of the air blowing channel near the port of the first chamber 202 is tangent to the annular surface 111. The lens module also includes a sealing ring 80, which is sleeved on the outer periphery of the annular surface 111, and the outer periphery of the sealing ring 80 abuts against the inner peripheral surface of the first through hole 201.

[0048] In this embodiment, when the airflow blown out of the air blowing channel blows towards the annular surface 111, the airflow changes direction under the action of the annular surface 111 and spirals down the annular surface 111. It then continues to spiral down the straight section 12 before exiting through the second through hole 301. This structural design allows the airflow to clean and cool the outer peripheral wall of the lens 10 within the first chamber 202, thereby improving the detection accuracy and service life of the lens 10.

[0049] Furthermore, the gas supply assembly 40 includes a gas storage tank, a gas supply pipeline assembly, and a guide block 41. The gas supply pipeline assembly is disposed between the gas storage tank and the guide block 41. The guide block 41 is connected to the connector 20. The guide block 41 has an air inlet channel and a third through hole 412. The air inlet channel is connected to the blowing channel, and the third through hole 412 penetrates the guide block 41 along the first direction.

[0050] Specifically, the air supply pipeline assembly is also equipped with a solenoid valve, and the cutting machine also includes a controller. The controller is electrically connected to the solenoid valve. When the cutting machine is working, the controller controls the solenoid valve to open, allowing the gas in the gas tank to enter the guide block 41 through the air supply pipeline assembly. In this embodiment, in order to allow the airflow in the air supply pipeline assembly to flow into the first chamber 202 and to allow the airflow in the air supply pipeline assembly to clean the surface of the workpiece, a guide block 41 is required. The air supply pipeline assembly includes a first pipe and a second pipe. The first pipe is connected between the air inlet channel and the gas tank, and the second pipe is connected between the third through hole 412 and the gas tank. When the cutting machine starts, the airflow flowing out of the third through hole 412 blows onto the surface of the workpiece to disperse water stains and dust on the surface of the workpiece, thereby improving the processing accuracy of the cutting machine. Meanwhile, the airflow in the air intake channel enters the first chamber 202 through the air blowing channel and flows out through the second through hole 301, thereby preventing dust and water stains from entering the first chamber 202 through the second through hole 301 and causing contamination to the lens 10.

[0051] Furthermore, the connector 20 includes an annular seat, the outer peripheral surface of which is a first arcuate surface 204, and the guide block 41 is provided with a second arcuate surface 413 on the side near the annular seat, the second arcuate surface 413 abutting against the first arcuate surface 204.

[0052] In this embodiment, the first through hole 201 is disposed in the middle of the annular seat, and the outer peripheral surface of the annular seat is a first arc-shaped surface 204. In order to improve the connection stability between the guide block 41 and the annular seat, a second arc-shaped surface 413 is provided on the side of the guide block 41 near the annular seat in this embodiment. When the guide block 41 is connected to the annular seat, the second arc-shaped surface 413 fits against the first arc-shaped surface 204, thereby increasing the contact area between the guide block 41 and the annular seat and improving the connection stability between the guide block 41 and the annular seat.

[0053] Furthermore, the connector 20 is provided with a first hole 203, which extends from the outer peripheral sidewall of the connector 20 to the first through hole 201. The guide block 41 is provided with a second hole 411 opposite to the first hole 203. The second hole 411 and the first hole 203 form an air blowing channel, and an air passage pipe 70 passes through the air blowing channel.

[0054] Because of the placement of the guide block 41, airflow in the air blowing channel may leak between the first hole 203 and the second hole 411, thereby reducing the gas flow rate in the air blowing channel and ultimately decreasing the dustproof and waterproof capabilities of the lens module. Therefore, in this embodiment, an air passage pipe 70 is installed inside the air blowing channel to prevent airflow leakage between the first hole 203 and the second hole 411. On the other hand, the air passage pipe 70 also has a positioning function. When assembling the connector 20 and the guide block 41, one end of the air passage pipe 70 is first fixed to the first hole 203, and then the second hole 411 is fitted onto the other end of the air passage pipe 70. After that, a fastener is used to fix the guide block 41 to the connector 20, thereby improving assembly efficiency and avoiding the difficulty in aligning the fastener with the fixing holes on the connector 20.

[0055] Furthermore, along the first direction, the projection surface of the second through hole 301 is located within the projection surface of the first end of the lens 10, and the maximum distance L1 from the outer edge of the projection surface of the second through hole 301 to the outer edge of the projection surface of the first end of the lens 10 satisfies the relationship: 0mm<L1≤2mm.

[0056] Since the first end of the lens 10 is located inside the first chamber 202, and the first end of the lens 10 detects the workpiece through the second through hole 301, when the second through hole 301 is too small relative to the first end of the lens 10, i.e., L1 > 2 mm, the first end of the lens 10 may be excessively blocked, thereby reducing the detection accuracy of the lens 10. In this embodiment, the value of L1 can be 0.1 mm, 0.5 mm, 1 mm, 1.5 mm, or 2 mm.

[0057] Optionally, the minimum inner diameter D3 of the second through hole 301 and the minimum outer diameter D4 of the first end of the lens 10 satisfy the following relationship: 0.86≤D3 / D4≤0.90.

[0058] In this embodiment, when the minimum inner diameter D3 of the second through hole 301 is too large relative to the minimum outer diameter D4 of the first end of the lens 10 (i.e., D3 / D4 is greater than 0.90), since the first tapered groove 302 is connected to the second through hole 301, this will reduce the inclination of the first tapered groove 302, thereby reducing the flow rate of the gas blown out of the second through hole 301. Therefore, when the flow rate of the gas blown out of the second through hole 301 needs to reach a specified speed, the gas supply in the gas tank needs to be increased, thus increasing the usage cost of the lens module. Conversely, when the minimum inner diameter D3 of the second through hole 301 is small relative to the minimum outer diameter D4 of the first end of the lens 10 (i.e., D3 / D4 is less than 0.86), the second through hole 301 is small, causing the first end of the lens 10 to be partially blocked by the second through hole 301. This may prevent the first end of the lens 10 from detecting the workpiece through the second through hole 301 or reduce the detection accuracy of the workpiece by the first end of the lens 10. The values ​​of D3 / D4 can be 0.86, 0.87, 0.88, 0.89, and 0.90.

[0059] Optionally, the inner diameter D1 of the air blowing channel and the minimum inner diameter D3 of the second through hole 301 satisfy the following relationship: 0.2≤D1 / D3≤0.3.

[0060] Specifically, when D1 / D3 is less than 0.2, meaning the inner diameter D1 of the air blowing channel is smaller than the minimum inner diameter D3 of the second through hole 301, and the second through hole 301 is larger, the flow rate of the gas flowing out of the second through hole 301 will decrease. To ensure that the flow rate of the gas flowing out of the second through hole 301 reaches the specified flow rate, the gas supply per unit time of the gas storage tank needs to be increased, thus increasing the operating cost of the lens module. At the same time, if the inner diameter D1 of the air blowing channel is too small, the resistance within the air blowing channel will be too large, making it difficult for the gas to enter the first chamber 202, thereby affecting the protective effect of the lens module. When D1 / D3 is greater than 0.3, the inner diameter D1 of the air blowing channel is larger than the minimum inner diameter D3 of the second through hole 301. A larger air blowing channel requires increasing the gas supply per unit time of the gas storage tank to increase the gas volume held in the first chamber 202, thus increasing the cost of the lens module. Alternatively, a smaller second through hole 301 may obstruct the first end of the lens 10, affecting the detection accuracy of the first end. The values ​​of D1 / D3 can be 0.20, 0.22, 0.24, 0.26, 0.28, and 0.30.

[0061] Optionally, the inner diameter D2 of the first through hole 201 and the minimum outer diameter D4 of the first end of the lens 10 satisfy the following relationship: 0.60≤D4 / D2≤0.68.

[0062] Specifically, the ratio of the inner diameter D2 of the first through-hole 201 to the minimum outer diameter D4 of the first end of the lens 10 affects the volume of the first chamber 202. When D4 / D2 is less than 0.6, the volume of the first chamber 202 is too large, resulting in a high gas content that effectively protects the first end of the lens 10. However, increasing the volume of the first chamber 202 may require either reducing the minimum outer diameter D4 of the first end of the lens 10 or increasing the inner diameter of the first through-hole 201. The former affects the detection range of the lens 10, while the latter increases the overall size of the lens module, leading to a decrease in space utilization. Conversely, when D4 / D2 is greater than 0.68, the volume of the first chamber 202 decreases, reducing the gas content and hindering effective cleaning of the outer peripheral walls of the first end of the lens 10. The values ​​of D4 / D2 can be 0.60, 0.61, 0.62, 0.63, 0.64, 0.65, 0.66, 0.67 and 0.68.

[0063] Optionally, the maximum distance L2 from the inner circumferential surface of the first chamber 202 to the first end of the lens 10 and the minimum outer diameter D4 of the first end of the lens 10 satisfy the following relationship: 0.25≤L2 / D4≤0.30.

[0064] When the ratio of the maximum distance L2 between the inner circumferential surface of the first chamber 202 and the first end of the lens 10 to the minimum outer diameter D4 of the first end of the lens 10 is too large (i.e., L2 / D4 is greater than 0.3), the volume of the first chamber 202 is large. However, this can lead to an oversized connector 20 or an undersized minimum outer diameter D4 of the first end of the lens 10, thus affecting the space utilization of the lens module or the detection accuracy of the lens 10. Conversely, when L2 / D4 is less than 0.25, the volume of the first chamber 202 is small, preventing the gas from effectively cleaning the outer circumferential sidewall of the first end of the lens 10. The value of L2 / D4 can be 0.25, 0.26, 0.27, 0.28, 0.29, or 0.30.

[0065] In some embodiments, the lens module further includes a point light source 50, which is disposed on the lens 10 and located on the side of the connector 20 opposite to the ring light source 30. The point light source 50 is used to increase the amount of light entering the lens 10. A camera 60 is also disposed on the lens module, connected to the lens 10 and disposed at the second end of the lens 10. In one specific embodiment, D1 is 4mm, D2 is 28mm, D3 is 16mm, D4 is 18mm, and L2 is 5mm.

[0066] In summary, the lens module and cutting machine of this application, by setting a connector 20 and an air supply assembly 40 on the lens 10, form a first chamber 202 with the first through hole 201 on the connector 20 and the second through hole 301 on the ring light source 30. Airflow enters the first chamber 202 through the air blowing channel, circulates around the first end of the lens 10, and is blown out through the second through hole 301. This not only removes dirt from the outer peripheral side of the lens 10 but also dissipates heat from the lens 10. Furthermore, since air is continuously blown out from the second through hole 301, water stains and dust are prevented from entering the first chamber 202 through the second through hole 301 and contaminating the lens 10. The ring light source 30 of this application has a first conical groove 302 on the side near the connector 20. The first conical groove 302 increases the airflow velocity out of the second through hole 301, further eliminating the possibility of water stains and dust entering the first chamber 202 through the second through hole 301. In addition, the guide block 41 of this application is provided with a third through hole 412, and the second pipe is connected to the third through hole 412. Gas is blown through the third through hole 412 to the outer peripheral surface of the workpiece, thereby blowing away water stains and dust on the outer peripheral surface of the workpiece to improve the processing accuracy of the cutting machine.

[0067] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "on top of" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0068] Furthermore, it should be noted that the use of terms such as "first" and "second" to define components is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore cannot be construed as limiting the scope of protection of this application.

[0069] The above are merely preferred embodiments of this application and are not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A lens module, characterized in that, include: Lens (10), the lens (10) extending along a first direction; A connector (20) is provided with a first through hole (201), and the first end of the lens (10) passes through the first through hole (201); A ring light source (30) is connected to the connector (20). The ring light source (30) has a second through hole (301) that communicates with the first through hole (201). A first chamber (202) is formed between the first through hole (201) and the second through hole (301), and the first end of the lens (10) is located in the first chamber (202). An air supply assembly (40) is connected to the connector (20). An air blowing channel is provided between the air supply assembly (40) and the connector (20). The air blowing channel communicates with the first chamber (202), and the center line of the port of the air blowing channel near the first chamber (202) is tangent to the outer peripheral sidewall of the lens (10).

2. The lens module according to claim 1, characterized in that, The annular light source (30) is provided with a first conical groove (302) and a second conical groove (303). The first conical groove (302) is provided on the side of the annular light source (30) close to the connector (20), and the second conical groove (303) is provided on the side of the annular light source (30) away from the connector (20). The second through hole (301) penetrates the bottom of the first conical groove (302) and the bottom of the second conical groove (303). Along the first direction, the cross-sectional area of ​​the first conical groove (302) gradually increases, while the cross-sectional area of ​​the second conical groove (303) gradually decreases.

3. The lens module according to claim 1, characterized in that, The first end of the lens (10) includes: Transition section (11) is provided on the side of the first end of the lens (10) away from the ring light source (30). The transition section (11) is sealed to the first through hole (201). Along the first direction, the cross-sectional area of ​​the transition section (11) gradually increases. A straight section (12) is connected to the transition section (11) on the side near the annular light source (30).

4. The lens module according to claim 3, characterized in that, The transition section (11) is provided with an inclined conical surface (112) and an annular surface (111) that are connected to each other. The inclined conical surface (112) is connected between the straight section (12) and the annular surface (111). The center line of the blowing channel near the port of the first chamber (202) is tangent to the annular surface (111). The lens module also includes a sealing ring (80), which is sleeved on the outer periphery of the annular surface (111), and the outer periphery of the sealing ring (80) abuts against the inner peripheral surface of the first through hole (201).

5. The lens module according to claim 1, characterized in that, The gas supply assembly (40) includes a gas storage tank, a gas supply pipeline assembly, and a guide block (41). The gas supply pipeline assembly is disposed between the gas storage tank and the guide block (41). The guide block (41) is connected to the connector (20). The guide block (41) has an air inlet channel and a third through hole (412). The air inlet channel is connected to the blowing channel. The third through hole (412) penetrates the guide block (41) along the first direction.

6. The lens module according to claim 5, characterized in that, The connector (20) includes an annular seat, the outer peripheral surface of which is a first arc-shaped surface (204), and the guide block (41) is provided with a second arc-shaped surface (413) on the side near the annular seat, the second arc-shaped surface (413) abutting against the first arc-shaped surface (204).

7. The lens module according to claim 5, characterized in that, The connector (20) is provided with a first hole (203), which extends from the outer peripheral sidewall of the connector (20) to the first through hole (201). The guide block (41) is provided with a second hole (411) opposite to the first hole (203). The second hole (411) and the first hole (203) form the air blowing channel, and an air passage pipe (70) passes through the air blowing channel.

8. The lens module according to any one of claims 1 to 7, characterized in that, Along the first direction, the projection surface of the second through hole (301) is located within the projection surface of the first end of the lens (10), and the maximum distance L1 from the outer edge of the projection surface of the second through hole (301) to the outer edge of the projection surface of the first end of the lens (10) satisfies the relationship: 0mm < L1 ≤ 2mm; and / or, The minimum inner diameter D3 of the second through hole (301) and the minimum outer diameter D4 of the first end of the lens (10) satisfy the following relationship: 0.86 ≤ D3 / D4 ≤ 0.90; and / or, The inner diameter D1 of the air blowing channel and the minimum inner diameter D3 of the second through hole (301) satisfy the following relationship: 0.2≤D1 / D3≤0.

3.

9. The lens module according to any one of claims 1 to 7, characterized in that, The inner diameter D2 of the first through hole (201) and the minimum outer diameter D4 of the first end of the lens (10) satisfy the following relationship: 0.60 ≤ D4 / D2 ≤ 0.68; and / or, The maximum distance L2 from the inner circumferential surface of the first chamber (202) to the first end of the lens (10) and the minimum outer diameter D4 of the first end of the lens (10) satisfy the following relationship: 0.25≤L2 / D4≤0.

30.

10. A cutting machine, characterized in that, The cutting machine includes the lens module according to any one of claims 1 to 9.

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